死 因(しいん)

しいん

noun

cause of death

formalwrittenmedicallegalhealth

1. cause of death

The reason or medical condition that led to a person's death. Used in medical, legal, and news contexts.

死因(しいん)は心不全(しんふぜん)だった。

The cause of death was heart failure.

警察(けいさつ)が死因(しいん)を調(しら)べている。

The police are investigating the cause of death.

解剖(かいぼう)の結果(けっか)、死因(しいん)は急性(きゅうせい)の中毒(ちゅうどく)であることが判明(はんめい)した。

As a result of the autopsy, it was determined that the cause of death was acute poisoning.

Composed of 死(し) (death) + 因(いん) (cause). A formal term used in medical reports, legal documents, and news articles.

Common collocations

死因(しいん)を調(しら)べる: to investigate the cause of death
死因(しいん)を特定(とくてい)する: to determine the cause of death
死因(しいん)不明(ふめい): cause of death unknown
直接(ちょくせつ)死因(しいん): direct cause of death
死因(しいん)は～だ: the cause of death was 〜

Types

Related words

死亡(しぼう): death (formal, factual)
死去(しきょ): passing away (respectful)
検死(けんし): autopsy, postmortem examination

Related Words

Related: 死去(しきょ) (death, passing)

Related: 死亡(しぼう) (death)

Related: 検死(けんし) (autopsy, postmortem examination)

general

Added 2026.2.24 15:41 · Revised 2026.10.15 22:26

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